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Radio Valve Data: 1915-1960Keith R Thrower OBE, The Valve Museum, April, 2022.
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Post-1925 amplifying valves, frequency changers and signal diodes | Type | Description | Filament | Anode | Auxillary Grid | Grid | ra | gm/go | RL | Po | Rk | | Year | | | Volts | Amps | Volts | mA | Volts | mA | -V | kΩ | mA/V | kΩ | Watts | Ω | Type | Ref | |
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Note: for Loctal B8G read B8B, USS & USM = UX, Y8A = Footless |
H210 (red line) | General-purpose triode | 1.8* | 0.10 | 30-80 | | - | - | 2.0 | 43.0 | 0.28 | | | | B4 | 1 | 1926 |
H408 (red line) | General-purpose triode | 3.7* | 0.08 | 30-80 | | - | - | 2.0 | 30.0 | 0.43 | | | | B4 | 1 | 1926 |
H610 | General-purpose triode | 5.4* | 0.10 | 30-90 | | - | - | | 28.0 | 0.25 | | | | B4 | 1 | 1926 |
HF2 | General-purpose triode | 2.0* | 0.10 | 120 | | - | - | 1.0 | 30.0 | 0.50 | | | | B4 | 1 | |
HF4 | General-purpose triode | 4.0* | 0.10 | | | - | - | | 24.0 | 0.75 | | | | B4 | 1 | 1929 |
HR210 (blue line) | Detector or RCC triode | 1.8* | 0.10 | 120 | | - | - | 1.5 | 50.0 | 0.36 | | | | B4 | 1 | 1926 |
HR408 (blue line) | Detector triode | 3.7* | 0.08 | 120 | | - | - | 1.5 | 25.0 | 0.44 | | | | B4 | 1 | 1926 |
HR610 | Triode | 5.4* | 0.10 | | | - | - | | | | | | | B4 | 1 | 1929 |
L210 | Detector or AF triode | 1.8* | 0.10 | 30-100 | | - | - | 2-4 | 25.0 | 0.30 | | | | B4 | 1 | 1926 |
L408 (green line) | AF triode | 3.7* | 0.08 | 30-100 | | - | - | 2-4 | 16.5 | 0.45 | | | | B4 | 1 | 1926 |
L610 | AF triode | 5.4* | 0.10 | 60-100 | | - | - | 2-5 | 14.0 | 0.61 | | | | B4 | 1 | 1926 |
LF2 | AF triode | 2.0* | 0.10 | | | - | - | | 15.0 | 0.60 | | | | B4 | 1 | 1929 |
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LF4 | AF triode | 4.0* | 0.10 | | | - | - | | 10.0 | 0.90 | | | | B4 | 1 | 1929 |
LP2 | AF triode | 2.0* | | | | - | - | | | | | | | B4 | 1 | 1929 |
LP4 | Output triode | 4.0* | 0.15 | | | - | - | | 6.0 | 1.00 | | | | B4 | 1 | 1929 |
LP6 | Output triode | 6.0* | 0.15 | 120 | 5.2 | - | - | 9.0 | 6.7 | 0.90 | | | | B4 | 1 | 1929 |
LP240 (white line) | Output triode | 1.8* | 0.40 | 60-120 | | - | - | 4-12 | 8.5 | 0.59 | | | | B4 | 1 | 1926 |
LP430 (white line) | Output triode | 3.7* | 0.30 | 60-120 | | - | - | 5-12 | 7.5 | 0.66 | | | | B4 | 1 | 1926 |
LP625 | Output triode | 5.4* | 0.25 | 60-120 | | - | - | 8-12 | 6.5 | 0.77 | | | | B4 | 1 | 1926 |
PP4 | Output triode | 4.0* | 0.20 | 90-120 | | - | - | 12.0 | 2.7 | 1.50 | | | | B4 | 1 | 1929 |
RC2 | RCC triode | 2.0* | 0.10 | | | - | - | | 50.0 | 0.50 | | | | B4 | 1 | 1929 |
RC4 | RCC triode | 4.0* | 0.10 | | | - | - | | 45.0 | 0.60 | | | | B4 | 1 | 1929 |
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